1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: aitio.c,v 1.1 2010/02/23 22:54:52 misho Exp $
7: *
8: *************************************************************************/
9: #include "global.h"
10:
11:
12: #pragma GCC visibility push(hidden)
13:
14: int io_Errno;
15: char io_Error[STRSIZ];
16:
17: #pragma GCC visibility pop
18:
19:
20: // io_GetErrno() Get error code of last operation
21: inline int io_GetErrno()
22: {
23: return io_Errno;
24: }
25:
26: // io_GetError() Get error text of last operation
27: inline const char *io_GetError()
28: {
29: return io_Error;
30: }
31:
32: // io_SetErr() Set error to variables for internal use!!!
33: inline void io_SetErr(int eno, char *estr, ...)
34: {
35: va_list lst;
36:
37: io_Errno = eno;
38: memset(io_Error, 0, STRSIZ);
39: va_start(lst, estr);
40: vsnprintf(io_Error, STRSIZ, estr, lst);
41: va_end(lst);
42: }
43:
44:
45: /*
46: * ioPromptRead() Read data from input h[0] with prompt to output h[1]
47: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
48: * @csPrompt = Prompt before input, may be NULL
49: * @psData = Readed data
50: * @dataLen = Length of data
51: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
52: */
53: int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen)
54: {
55: int ok = 0;
56: FILE *inp, *out;
57: char szLine[BUFSIZ], *pos;
58:
59: if (!psData || !dataLen)
60: return -1;
61:
62: inp = fdopen(!h ? 0 : h[0], "r");
63: if (!inp) {
64: LOGERR;
65: return -1;
66: }
67: out = fdopen(!h ? 1 : h[1], "w");
68: if (!out) {
69: LOGERR;
70: return -1;
71: }
72:
73: while (!ok) {
74: if (csPrompt) {
75: fprintf(out, "%s", csPrompt);
76: fflush(out);
77: }
78:
79: memset(szLine, 0, BUFSIZ);
80: if (!fgets(szLine, BUFSIZ, inp)) {
81: clearerr(inp);
82: fpurge(out);
83: fflush(out);
84: return 0;
85: }
86:
87: if ((pos = strchr(szLine, '\n')))
88: *pos = 0;
89:
90: strlcpy(psData, szLine, dataLen);
91: ok = 1;
92: }
93:
94: return pos - szLine;
95: }
96:
97: /*
98: * ioPromptPassword() Read password from input h[0] with prompt to output h[1]
99: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
100: * @csPrompt = Prompt before input, may be NULL
101: * @psPass = Readed password
102: * @passLen = Length of password
103: * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
104: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
105: */
106: int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm)
107: {
108: int ret, ok = 0;
109: FILE *inp, *out;
110: char szLine[2][STRSIZ];
111: struct sgttyb tty_state;
112:
113: if (!psPass || !passLen)
114: return -1;
115:
116: inp = fdopen(!h ? 0 : h[0], "r");
117: if (!inp) {
118: LOGERR;
119: return -1;
120: }
121: out = fdopen(!h ? 1 : h[1], "w");
122: if (!out) {
123: LOGERR;
124: return -1;
125: }
126:
127: if (ioctl(fileno(inp), TIOCGETP, &tty_state) == -1) {
128: LOGERR;
129: return -1;
130: } else {
131: tty_state.sg_flags &= ~ECHO;
132: if (ioctl(fileno(inp), TIOCSETP, &tty_state) == -1) {
133: LOGERR;
134: return -1;
135: }
136: }
137:
138: while (!ok) {
139: switch ((ret = ioPromptRead(h, (!csPrompt || !*csPrompt) ? "Password:" : csPrompt,
140: szLine[0], STRSIZ))) {
141: case -1:
142: LOGERR;
143: ok = -1;
144: case 0:
145: goto next;
146: }
147: if (confirm) {
148: fprintf(out, "\n");
149: fflush(out);
150:
151: switch (ioPromptRead(h, "Password confirm:", szLine[1], STRSIZ)) {
152: case -1:
153: LOGERR;
154: ok = -1;
155: goto next;
156: case 0:
157: default:
158: if (strcmp(szLine[0], szLine[1])) {
159: fprintf(out, "\n\07\07Mismatch - Try again!\n");
160: fflush(out);
161: continue;
162: }
163: }
164: }
165:
166: strlcpy(psPass, szLine[0], passLen);
167: ok = ret;
168: fprintf(out, "\n");
169: fflush(out);
170: }
171:
172: next:
173: tty_state.sg_flags |= ECHO;
174: if (ioctl(fileno(inp), TIOCSETP, &tty_state) == -1) {
175: LOGERR;
176: return -1;
177: }
178:
179: return ok;
180: }
181:
182: /*
183: * ioRegexVerify() Function for verify data match in regex expression
184: * @csRegex = Regulare expression pattern
185: * @csData = Data for check and verify
186: * @startPos = Return start positions
187: * @endPos = Return end positions
188: * return: NULL not match or error; !=NULL begin of matched data
189: */
190: const char *ioRegexVerify(const char *csRegex, const char *csData, int *startPos, int *endPos)
191: {
192: regex_t re;
193: regmatch_t match;
194: char szErr[STRSIZ];
195: int ret, flg;
196: const char *pos;
197:
198: if (!csRegex || !csData)
199: return NULL;
200:
201: if ((ret = regcomp(&re, csRegex, REG_EXTENDED))) {
202: regerror(ret, &re, szErr, STRSIZ);
203: io_SetErr(ret, "Error:: %s\n", szErr);
204: regfree(&re);
205: return NULL;
206: }
207:
208: for (ret = flg = 0, pos = csData; !(ret = regexec(&re, pos, 1, &match, flg));
209: pos += match.rm_eo, flg = REG_NOTBOL) {
210: if (startPos)
211: *startPos = match.rm_so;
212: if (endPos)
213: *endPos = match.rm_eo;
214:
215: pos += match.rm_so;
216: break;
217: }
218:
219: if (ret) {
220: regerror(ret, &re, szErr, STRSIZ);
221: io_SetErr(ret, "Error:: %s\n", szErr);
222: pos = NULL;
223: }
224:
225: regfree(&re);
226: return pos;
227: }
228:
229: /*
230: * ioRegexGet() Function for get data match in regex expression
231: * @csRegex = Regulare expression pattern
232: * @csData = Data from get
233: * @psString = Returned string if match
234: * @strLen = Length of string
235: * return: 0 not match; >0 count of returned chars
236: */
237: int ioRegexGet(const char *csRegex, const char *csData, char * __restrict psString, int strLen)
238: {
239: int sp, ep, len;
240: const char *str;
241:
242: if (!csRegex || !csData)
243: return -1;
244:
245: str = ioRegexVerify(csRegex, csData, &sp, &ep);
246: if (!str)
247: return 0;
248:
249: len = ep - sp;
250: if (psString && strLen) {
251: memset(psString, 0, strLen);
252: strncpy(psString, str, strLen <= len ? strLen - 1 : len);
253: }
254:
255: return len;
256: }
257:
258: /*
259: * ioRegexReplace() Function for replace data match in regex expression with newdata
260: * @csRegex = Regulare expression pattern
261: * @csData = Source data
262: * @csNew = Data for replace
263: * return: NULL not match or error; !=NULL allocated new string, must be free after use!
264: */
265: char *ioRegexReplace(const char *csRegex, const char *csData, const char *csNew)
266: {
267: int sp, ep, len;
268: char *str = NULL;
269:
270: if (!csRegex || !csData)
271: return NULL;
272:
273: if (!ioRegexVerify(csRegex, csData, &sp, &ep))
274: return NULL;
275:
276: // ___ before match
277: len = sp + 1;
278: str = malloc(len);
279: if (!str) {
280: LOGERR;
281: return NULL;
282: } else
283: strlcpy(str, csData, len);
284: // * replace match *
285: if (csNew) {
286: len += strlen(csNew);
287: str = realloc(str, len);
288: if (!str) {
289: LOGERR;
290: return NULL;
291: } else
292: strlcat(str, csNew, len);
293: }
294: // after match ___
295: len += strlen(csData) - ep;
296: str = realloc(str, len);
297: if (!str) {
298: LOGERR;
299: return NULL;
300: } else
301: strlcat(str, csData + ep, len);
302:
303: return str;
304: }
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